Wireless apparatus

Abstract

The present invention has an object to provide a wireless apparatus which is capable of correctly sampling a waveform of a pulse even when a shape of the pulse is varied. A synchronizing apparatus for causing an input signal to be synchronized with a clock signal is equipped with sampling unit, and delay control unit. The sampling unitandsample the input signal at first sampling timing and second sampling timing, which are separated from each other in a predetermined time interval. The delay control unitshifts both the first and second sampling timing during synchronous pull-in operation, and also, narrows the interval between said first and second sampling timing during synchronous follow-up operation. A synchronous status judging unitjudges whether or not the input signal is synchronized with the clock signal based upon a phase error amount outputted from a phase error calculating unit, and outputs the synchronous status to a delay amount control unitThe delay amount control unitcontrols to increase/decrease delay amounts which have been presently set in variable delay devicesandbased upon the phase error amount outputted from the phase error calculating unitand the synchronous status outputted from the synchronous status judging unit